Effect of slit size on the impact load against debris-flow mitigation dams
文献类型：期刊论文
| 作者 | Hu Hongsen1,4 ; Zhou Gordon G. D.1,4; Song Dongri1,4; Cui Kahlil Fredrick E.1,4; Huang Yu3; Choi Clarence E.2; Chen Huayong1,4
|
| 刊名 | ENGINEERING GEOLOGY
 |
| 出版日期 | 2020 |
| 卷号 | 274页码:105764 |
| 关键词 | Debris-flow hazards Slit dam Slit size Check dam Impact load Physical model test |
| ISSN号 | 0013-7952 |
| DOI | 10.1016/j.enggeo.2020.105764 |
| 产权排序 | 1 |
| 通讯作者 | Zhou, Gordon G. D.(gordon@imde.ac.cn) |
| 文献子类 | Article |
| 英文摘要 | Structural countermeasures such as slit dams and check dams are widely installed in mountainous regions to mitigate debris-flow hazards. However, current approaches adopted to estimate debris-flow impact load only depend on the flow properties without considering the effect of structural geometry. To better understand the effect of slit size on the impact load experienced by debris-flow mitigation dams, a series of small-scale debris flows impact tests on modelled slit dams and check dams are conducted in an instrumented flume. Measurement of the flow velocity, depth, impact load, total basal normal stress, and basal pore-fluid pressure enable a comprehensive grasp of the impact details. Tests reveal that the peak frontal impact pressure is largely unaffected by the slit size of structural countermeasures but is sensitive to the debris-flow properties. However, the slit size obviously influences the peak force experienced by the structures. A critical relative slit size (ratio of slit size to the maximum particle diameter in the debris flow) of 3.6 is determined wherein slit dams can effectively mitigate debris-flow hazards. In addition, a simplified bilinear pressure distribution model is proposed for debris-flow impact load estimation of the slit dams and check dams. |
| 电子版国际标准刊号 | 1872-6917 |
| WOS关键词 | PORE-FLUID PRESSURE ; DEPOSITIONAL MECHANISMS ; QUANTITATIVE-ANALYSIS ; EXPERIMENTAL TESTS ; JIANGJIA RAVINE ; RIGID BARRIER ; DESIGN ; SIMULATION ; MORPHOLOGY ; MASS |
| 资助项目 | International Science & Technology Cooperation Program of China[2018YFE0100100] ; National Natural Science Foundation of China[51809261] ; National Natural Science Foundation of China[51778249] ; CAS Light of West China Program[T22-603/15-N] ; Research Grants Council of the Government of Hong Kong SAR, China |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000558028500022 |
| 出版者 | ELSEVIER |
| 资助机构 | International Science & Technology Cooperation Program of China ; National Natural Science Foundation of China ; CAS Light of West China Program ; Research Grants Council of the Government of Hong Kong SAR, China |
| 源URL | [http://ir.imde.ac.cn/handle/131551/35447]  |
| 专题 | 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 |
| 通讯作者 | Zhou Gordon G. D. |
| 作者单位 | 1.University of Chinese Academy of Sciences, Beijing, China;; 2.Department of Civil Engineering, the University of Hong Kong, China 3.Department of Geotechnical Engineering, College of Civil Engineering, Tongji University, Shanghai, China;; 4.Key Laboratory of Mountain Hazards and Earth Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences (CAS), Chengdu, China;; |
| 推荐引用方式 GB/T 7714 | Hu Hongsen,Zhou Gordon G. D.,Song Dongri,et al. Effect of slit size on the impact load against debris-flow mitigation dams[J]. ENGINEERING GEOLOGY,2020,274:105764. |
| APA | Hu Hongsen.,Zhou Gordon G. D..,Song Dongri.,Cui Kahlil Fredrick E..,Huang Yu.,...&Chen Huayong.(2020).Effect of slit size on the impact load against debris-flow mitigation dams.ENGINEERING GEOLOGY,274,105764. |
| MLA | Hu Hongsen,et al."Effect of slit size on the impact load against debris-flow mitigation dams".ENGINEERING GEOLOGY 274(2020):105764. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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